Fellow Haskellers,
at <http://postmaster.cryp.to/> you will find the first beta
release of Postmaster, a mail transport agent written in
Haskell. It can act as a full ESMTP server for leaf sites
already, and if you have another MTA installed, then you can
use it as a front-end for that to do mail relaying, too. I
have been running the software in a pretty complex setup for
a few days now and it works reliably. Mostly. :-)
Have fun!
Peter